Undefined variable while trying to use extension

edited June 2008 in Vanilla 1.0 Help
I have just installed Vanilla for the first time. I added-on AddMember 1.0 and Auto Close 1.3 into the extension folder. They both say they are for 1.4.1 and When I go to the full path for AddMember I get Notice: Undefined variable: Context in /var/www/nwsa.org/communities/gataforum/extensions/AddMember/default.php on line 33 Fatal error: Call to a member function SetDefinition() on a non-object in /var/www/nwsa.org/communities/gataforum/extensions/AddMember/default.php on line 33 Line 33 looks like this: $Context->SetDefinition('AddMember', 'Add A New Member'); I get similar stuff with Auto Close Is there another file I should be changing? Any help would be really appreciated
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